<template>
    <ul class="todo-main">
        <transition-group name="todo" appear>
            <TodoItem
            v-for="todo in todoList" 
            :key="todo.todoId" 
            :todo="todo"
            />
        </transition-group>
    </ul>
</template>

<script>
    // 引入Item组件
    import TodoItem from './TodoItem.vue'

    export default {
        name:'TodoList',
        components:{TodoItem},
        props:['todoList']
    }
</script>

<style scoped>
    /*main*/
    .todo-main {
        margin-left: 0px;
        border: 1px solid #ddd;
        border-radius: 2px;
        padding: 0px;
    }

    .todo-empty {
        height: 40px;
        line-height: 40px;
        border: 1px solid #ddd;
        border-radius: 2px;
        padding-left: 5px;
        margin-top: 10px;
    }
    
    /* 元素进入过程中的设置 */
    .todo-enter-active{
        animation: hello 0.5s linear;
    }

    /* 元素离开过程中的设置 */
    .todo-leave-active{
        animation: hello 0.5s linear reverse;
    }

    /* 设置动画的样式 */
    @keyframes hello {
        from{
            transform: translateX(100%);
        }
        to{
            transform: translateX(0px);
        }
    }
</style>